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Does MySQL index foreign key columns automatically?
...ave a large table (1 million records) and count(*) where fkey=? would take 15 seconds. Added an index on the fkey column, and things go under a second now.
– AbiusX
Feb 1 '16 at 23:14
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Regex lookahead for 'not followed by' in grep
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151
Negative lookahead, which is what you're after, requires a more powerful tool than the standar...
Multiplication on command line terminal
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15
The classical solution is:
expr 5 \* 5
Another nice option is:
echo 5 5\*p | dc
Both of...
The provided URI scheme 'https' is invalid; expected 'http'. Parameter name: via
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edited Dec 11 '15 at 15:10
Liam
21.3k1717 gold badges8989 silver badges146146 bronze badges
a...
How to programmatically clear application data
...n the manifest?
– reubenjohn
Jul 3 '15 at 8:51
1
No, it does not require any special permission.
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How do I specify “close existing connections” in sql script
...antly recreate the db).
– 2xMax
Mar 15 '13 at 13:48
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show 4 more comments
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How to configure encoding in Maven?
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edited Oct 1 '15 at 22:24
BuZZ-dEE
3,19666 gold badges4343 silver badges6565 bronze badges
a...
What is the zero for string?
...e=\"evenodd\" d=\"M25.6622 17.6335C27.8049 17.6335 29.3739 16.9402 30.2537 15.6379C30.8468 14.7755 30.9615 13.5579 30.9615 11.9512V6.59049C30.9615 5.28821 30.4833 4.66231 29.4502 4.66231C28.9913 4.66231 28.4555 4.94978 28.1109 5.50789C27.499 4.86533 26.7335 4.56087 25.7005 4.56087C23.1369 4.56087 21...
Clicking a button within a form causes page refresh
... could look?
– Mateo Velenik
Feb 3 '15 at 11:55
That suggests to me that your problem is in javascript. The problem my...
What do the plus and minus signs mean in Objective-C next to a method?
...sn't change. And of course, the Objective-C language was around for nearly 15 years before Apple adopted it in OS X.
– Quinn Taylor
May 5 '10 at 4:15
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